Yes, it says so in the ecash token. You can check here with this decoder: https://nostrapps.github.io/cashu/
Discussion
Is the only way a merchant can verify the token hasn't been previously spent is to convert to lightning?
Yes, it says so in the ecash token. You can check here with this decoder: https://nostrapps.github.io/cashu/
Is the only way a merchant can verify the token hasn't been previously spent is to convert to lightning?